
.top {
    background-image: url("../img/banner_qtah.jpg");
    height: 500px;
    /*width: 1920px;*/
    background-size: 100% 100%;
    /*height: calc(1000 * 808px / 1920);*/
    color: white;
}

.top > div {
    /*display: flex;*/
    /*justify-content: center;*/
    /*border: 1px solid yellow;*/
}

.top > div > div {
    /*border: 1px solid blueviolet;*/
    width: 900px;
}

/*公司信息*/
/*.top>div:nth-child(1)>div{*/
.company {
    /*display: flex;*/
    /*justify-content: space-between;*/
    /*align-items: center;*/
}

.logo {
    /*background-image: url("../img/logo_g0yv.jpg");*/
    /*background-size: 100% 100%;*/
    height: 141px;
    width: 204px;
}
.logo img{
    height: 141px;
    width: 204px;
}
.phone-img {
    background-image: url("../img/icon2_03_uc2a.png");
    background-size: 100% 100%;
    height: 30px;
    width: 30px;
}

.company > div:nth-child(2) {
    /*display: flex;*/
    /*align-items: center;*/
}

/*-----------------------------------导航-------------*/
.top > div:nth-child(2) {
    background-color: rgb(230, 145, 55);
    height: 50px;
}

.nav {
    display: flex;
}

.nav > div {
    /*两个参数：上下内边距   左右内边距*/
    padding: 0 20px;
    height: 50px;
    /*    要让字体上下居中  行高*/
    line-height: 50px;
    cursor: pointer;
}

/*鼠标移动到div上面可以变背景颜色 hover*/
.nav > div:hover {
    background-color: white;
    /*字体颜色*/
    color: rgb(230, 145, 55);
}

/*---------------广告----------------*/
.ad {
    height: 300px;
}

/*.ad > div:nth-child(1) > div:nth-child(1) {*/
/*    !*    设置字体大小*!*/
/*    font-size: 30px;*/
/*}*/

/*aa{*/
/*    font-size: 30px;*/
/*    font-weight: bold;*/
/*    font-family: "Arial Black";*/
/*}*/
.ad .font-10 {
    line-height: 20px;
}

/* 后代选择器*/
.ad .font-20 {
    color: rgb(230, 145, 55);
}

/* 逗号，  分组选择器*/
/*.ad .justify-content-start>div:nth-child(1),.ad .justify-content-start>div:nth-child(3){*/
/* 奇偶数 奇数  odd  偶数 even*/
.ad .justify-content-start > div:nth-child(odd) {
    color: white;
    font-size: 15px;
}

/*.ad .justify-content-start>div:nth-child(3){*/
/*    color: white;*/
/*    font-size: 15px;*/
/*}*/
.ad .font-20 > div {
    margin: 5px 0 5px 0;
}

.ad .font-20 > div:nth-child(2) {
    /*margin: 0 0 0 30px;*/
    /*padding: 0 0 0 50px;*/
    /*缩进：em相对于当前字符缩进2个字符*/
    text-indent: 2em;
}
